Digital Sovereignty

EDR was the right choice. The cloud is the problem.

Cyberattacks are part of the operational reality. Professionally organized and state-sponsored actors are targeting a highly digitized infrastructure. Endpoint Detection & Response (EDR) has established itself as the most effective response: continuous behavioral analysis, automated response, and forensic visibility at the endpoint level.
That was good, but it is no longer sufficient. The next necessary step: QGroup S1EDROP.

The structural problem lies not in EDR itself, but in how it is typically implemented. Until now, powerful EDR systems have almost without exception been cloud-based. Telemetry data and security-relevant metadata were processed outside the organization’s own infrastructure. While this was acceptable for many organizations, it was not for highly sensitive and regulated environments. In government agencies, defense organizations, and critical infrastructure, data sovereignty is not an option but a prerequisite. Air-gapped networks and isolated systems are the norm there. Modern EDR concepts have thus long been at odds with the requirements for control and integrity.

Data-sovereign cybersecurity is possible

This boundary is beginning to dissolve. Technological maturity and operational experience gained from real-world incident response operations are now making it possible, for the first time, to deploy EDR in a way that consistently upholds data sovereignty: fully on-premises, isolated, and without structural dependence on the cloud. Detection, response, and forensic analysis take place where the data is generated—within the organization’s own infrastructure. Such an approach has been implemented by a German high-security provider serving the government and KRITIS sectors.

QGroup, which has specialized exclusively in cybersecurity since 1993 and operates as a certified APT response service provider, has been developing its own high-security architectures based on multilevel security concepts for decades. With S1EDROP, the company combines modern, AI-powered EDR technology with strict data sovereignty. The solution enables attack detection, automated response, and threat hunting to be conducted in isolated environments—without any leakage of operational data to external cloud infrastructures (on-premise). It is based on hardened systems and clearly separated trust domains that enforce isolation and control. EDR thus becomes not an outsourced service, but an integral part of the organization’s own defense architecture. Increasing regulatory requirements and growing geopolitical tensions are forcing a new approach. EDR was once the right answer to the threat landscape. The next step must focus on data sovereignty.

Thomas Blumenthal, CEO, Senior Security Architect, 2026

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